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Classical mechanics
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Questions (773)
find the gravitational force exerted by the sun on a 70 kg man located at the earth's equator
a)at noon when the man is closest
6 answers
asked by
albert
2,518 views
Two blocks are attached to opposite ends of a massless rope that goes over a massless, frictionless, stationary pulley. One of
4 answers
asked by
jjh
3,062 views
An electron is released from rest at a distance of 9 cm from a proton. How fast will the electron be moving when it is 3 cm from
4 answers
asked by
Lorena
3,812 views
A Projectile is launched from the top of a building with an initial velocity of 30m/s at angle of 60° above the horizontal. The
4 answers
asked by
himel
1,772 views
The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the
4 answers
asked by
Taylor
2,348 views
A ball with a mass 0.15kg is thrown upward with an initial velocity 20m/s from the roof of a building 30m high. Neglect air
4 answers
asked by
Anonymous
1,840 views
A wooden block of mass m = 9 kg starts from rest on an inclined plane sloped at an angle θ from the horizontal. The block is
4 answers
asked by
Mike
9,147 views
Boxes A and B are connected to each end of a light
vertical rope. A constant upward force F = 80.0 N is applied to box A.
5 answers
asked by
Kayla
6,815 views
A grasshopper jumps a horizontal distance of 1m from rest, with an initial velocity at a 45 degree angle with respect to the
5 answers
asked by
zara
9,356 views
Consider a pair of planets for which the distance between them decreases by a factor of 5. Demonstrate that the force between
4 answers
asked by
Astro
4,365 views
A meteor P is tracked by a radar observatory on the earth at O. When the meteor is directly overhead (theta = 90), the following
4 answers
asked by
Jessi
2,081 views
A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 36.0
4 answers
asked by
jj
1,103 views
A barbell is mounted on a nearly frictionless axle through its center. The low-mass rod has a length d = 0.27 m, and each ball
4 answers
asked by
Adam
2,611 views
A 58.7-kg lead ball is dropped from the Leaning Tower of Pisa. The tower is 55.0 m high.
A) How far does the ball fall in the
4 answers
asked by
Anon
3,462 views
A massless string is wrapped around a cylinder of mass 0.400 kg and radius 0.100 m. The string is attached to the ceiling. The
5 answers
asked by
Chris
1,054 views
A 77 g arrow is fired from a bow whose string exerts an average force of 95 N on the arrow over a distance of 81 cm. What is the
4 answers
asked by
Anup
5,060 views
A 1kg mass is dropped from a height of 50m. At what height would the velocity be 1/4 of velocity attained before impact.
4 answers
asked by
Anonymous
1,026 views
EXERCISE 4.9 (a) Suppose a hockey puck slides down a frictionless ramp with an acceleration of 5.00 m/s2. What angle
does the
4 answers
asked by
hisham
4,518 views
A flowerpot falls from a windowsill 25.0 m above the sidewalk.
A. How fast is the flowerpot moving when it strikes the ground??
4 answers
asked by
Maggie
12,359 views
Air resistance acting on a falling body can be taken into account by the approximate relation for the acceleration: a= dv/dt = g
4 answers
asked by
Rose
4,924 views
Jane and John, with masses of 50 kg and 60 kg, respectively, stand on a frictionless surfact 10 m apart. John pulls on a rope
4 answers
asked by
Katelyn
2,139 views
"A workman sitting on top of a roof of a house drops his hammer. The roof is smooth and slopes at an angle of 30.0 degrees to
4 answers
asked by
Stuck
2,511 views
A metal rod has a mass of 17.62 g. A graduated cylinder contains 29.9 mL of water. The metal rod is added to the cylinder. The
4 answers
asked by
suzy
1,440 views
a 10-kg rock and a 20-kg rock are dropped at the same time and experience no significant air resistance. if the 10-kg rock falls
4 answers
asked by
Anonymous
2,668 views
Two masses m are attached to two vertices of an equilateral triangle made of three massless rods of length l. A pivot is located
4 answers
asked by
Anonymous
1,573 views
A body P of mass 5kg moving with a velocity of 30M/s collids with another body q moving in opposite direction with a velocity of
10 answers
asked by
Datu
2,595 views
A car starts rolling down a 1-in-8 hill (1-in-8 means that for each 8 m traveled along the road, the elevation change is 1 m).
A)
4 answers
asked by
Brody
1,715 views
Two horizontal forces, F1 and F2, are acting on a box, but only F1 is shown in the drawing. F2 can point either to the right or
4 answers
asked by
Tiffany
1,920 views
A projectile is launched from ground level to the top of a cliff which is 195m away and 135m high (as shown in the figure ).If
4 answers
asked by
Jannie
973 views
a particle starts at time t = 0 and moves along the x axis so that its position at any time t>= 0 is given by x(t) =
4 answers
asked by
Lauren
3,903 views
You are playing catch with your sibling in your backyard. If you toss a ball at 15.0 m/s at an angle of 24.0° and your sibling
4 answers
asked by
john
1,640 views
A pendulum swings back and forth up to a maximum height of 1.52 m. Neglecting friction, what is the speed of the pendulum at the
4 answers
asked by
Megan
2,846 views
Two forces F1 = -7.50i + 6.00j and F2 = 8.40i + 7.50j are acting on a mass of m = 6.20 kg. The forces are measured in newtons.
4 answers
asked by
Sam Cole
752 views
A descent vehicle landing on the moon has
a vertical velocity toward the surface of the moon of 26.6 m/s. At the same time, it
3 answers
asked by
Camila Calero
1,748 views
find the mass of a ball on a roof 30 meters high, if the ball's gravitational energy is 58.8 joules.
4 answers
asked by
Anonymous
2,778 views
A ball rolls down a ramp that's set on a table, and from there falls off the table. The height of the ramp, length of the ramp,
2 answers
asked by
Mary
1,303 views
The 10 kg block shown is released from rest on the horizontal surface at point B, where the spring has been stretched a distance
4 answers
asked by
Brandon
778 views
A penny is dropped from rest from the top of a very tall building. Assuming the height of the building is 406 m and ignoring air
4 answers
asked by
Candy
3,332 views
A uniform thin sheet of metal is cut in the shape of a semicircle of radius R and lies in the xy plane with its center at the
4 answers
asked by
Jacob
1,439 views
Two blocks are connected by a light string that passes over a frictionless pulley. The system is released from rest while m2 is
4 answers
asked by
Anonymous
1,301 views
A sphere of mass 500g moving with a velocity of 200 cm s-1collides centrally with another sphere of mass 100 g moving with a
4 answers
asked by
Brijender Kumar Shah
1,326 views
(7) Show that if a particle moves at an angle θ with respect to the x-axis with speed u in frame S, then it moves at an angle
1 answer
asked by
Phil
434 views
Two small metal spheres with masses 2.0 g and 4.0 g are tied together by a 5.0 cm long massless
string and are at rest on a
4 answers
asked by
Arianne
1,574 views
A cat, walking along the window ledge of a New York apartment, knocks off a flower pot, which falls to the street 210 feet
4 answers
asked by
M
1,964 views
a particle moves in a straight line so that t seconds after passing a fixed point O its acceleration a cm per second is given by
4 answers
asked by
sadhna
1,988 views
Yo-Yo man releases a yo-yo from rest and allows it to drop, as he keeps the top end of the string stationary. The mass of the
4 answers
asked by
Joseph
2,350 views
Frank stands at the base of a building. He throws a 0.12kg rock straight up at a speed of 28m/s so that it rises to a maximum
2 answers
asked by
bob
545 views
Suppose you throw a stone straight up with an initial speed of 15.00 m/s
If you throw a second stone straight up 1.00s after the
4 answers
asked by
Sage
1,236 views
A stone thrown vertically upwards from the top of a building takes 3s to reach its maximum height . Find
1. The velocity with
3 answers
asked by
Anonymous
1,112 views
Two masses, m1=3kg and m2=2kg, are suspended with a massless rope over a pulley of mass M = 10kg. The pulley turns without
4 answers
asked by
Jake
3,015 views
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Parent Categories (4)
Dynamics
Kinematics
Mechanics
Physics