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Mechanics
Page 2
Questions (40,018)
Workers have loaded a delivery truck in such a way that its center of gravity is only slightly forward of the rear axle. .63m in
5 answers
asked by
shai
9,969 views
¬Calculate the period of oscillation of a simple pendulum of length 1.8 m, with a bob of mass 2.2 kg. What assumption is made
4 answers
asked by
Anonymous
2,093 views
A man mass 75 kg and a boy mass 25 kg dives off the end of a boat of mass 300 kg so that their relative horizontal velocity with
5 answers
asked by
sjeba
3,158 views
If a force of 100n stretches a spring by 0.1cm. Find
(A) the elastic constant (B) the work done in stretching the spring 0.3cm if
5 answers
asked by
Gabriel
1,669 views
You are told 3 things...1. That there are two objects with equal masses. 2. Both objects are in motion. 3. One object has a
17 answers
asked by
Clueless
1,587 views
A 25m ladder is leaning against a
vertical wall. The floor is s lightly slippery and the foot of the ladder slips away from the
4 answers
asked by
Miriama
1,181 views
at the bottom of a loop the speed of an airplane is 400 mph. this causes a normal acceleration of 9 g ft/sec^2, determine the
5 answers
asked by
aaa
4,390 views
A 2000 pound car is parked on a street that makes an angle of 12* with the horizontal (think it's a street on a hill). a) find
6 answers
asked by
ale
7,315 views
a uniform pole 20 ft. long weighing 80 lbs is supported by a boy 2 ft. from end a and a man 5 ft. from end b. at what point
4 answers
asked by
Anonymous
6,510 views
State the physical quantities one has to measure in order to determine the young's modulus of a wire?
7 answers
asked by
Ashwariyya
3,135 views
Forces with magnitudes of 250 pounds and 130pounds act on an object at angles 45degrees and -60degrees respectively with the
4 answers
asked by
Anonymous
4,576 views
The weight needed to balance a lever varies inversely with the distance from the fulcrum to the weight. A 120-lb weight is
7 answers
asked by
Help
4,848 views
A stone was dropped off a cliff and hit the ground with a speed of 120 ft/s. Using the fact that acceleration due to gravity is
5 answers
asked by
Cole
10,979 views
A block slides from rest with negligible friction down a track, descending 5.0m to point P at the bottom. It then slides on the
5 answers
asked by
Anonymous
16,746 views
a crate weighing 562 newtons is resting on an inclined plane 30 degress above the horizontal. Find the components of the weight
7 answers
asked by
amirah
6,184 views
A thin uniform rod has a length of 0.550 m and is rotating in a circle on a frictionless table. The axis of rotation is
5 answers
asked by
Sarah
4,127 views
A spring is stretched 40mm by force 15N, what is the work done by the force
9 answers
asked by
Issa
5,376 views
A spring sketch by 6cm when supporting a load of 15N? By how much would it stretch when supporting a load of 5Kg
7 answers
asked by
Purity
3,054 views
Two pullies are connected by a belt, Pulley A has a radius of 3 cm and pulley B has a radius of 6cm. As Pulley A rotates, a drop
4 answers
asked by
Anonymous
1,712 views
a)How much work is required to lift a 35-kg object from the ground 3.0 m into the air?
b) How much gravitational potential energy
19 answers
asked by
Annie
5,044 views
A wheel with rotational inertia I is mounted on a fixed, fricitonless axle. The angular speed w of the wheel is inccreased from
11 answers
asked by
Tammy
18,036 views
An ideal massless spring is fixed to the wall at one end. A block of mass M attached to the other end of the spring oscillates
4 answers
asked by
Tammy
14,014 views
a boy tosses a coin upward with a velocity of 14.7 m/s.
a. find the maximum height reached by the coin. b. time of flight c.
7 answers
asked by
jenalyn calimag
19,295 views
A 61-kg skier, coasting down a hill that is an angle of 23 to the horizontal, experiences a force of kinetic friction of
5 answers
asked by
Tristan
4,122 views
I was wondering if my answers are correct.
1. A 50kg person is taking a ride on an elevator travelling up at a steady speed of
7 answers
asked by
Liz
5,057 views
A mechanic uses a chain and block to lift a 875-kg engine 4.00 m to the top of the garage. The downward force in the chain over
5 answers
asked by
Holly
4,404 views
A spring of natural length 30cm is stretched to 35cm by a load of 15N. Calculate the extension produced,the elastic constant of
5 answers
asked by
Anonymous
1,277 views
An elastic string of length 20cm extends to 24cm when it supports a weight of 50N. Calculate the energy stored in the string.
5 answers
asked by
Shola
1,609 views
The position of an object connected to a spring varies with time according to the expression x = (7.1 cm) sin (2.1π t). Find
(a)
4 answers
asked by
Tom
7,111 views
A girl pushes a load of mass 20kg to a distance of 10 metres in 5 seconds calculate (1) the work done (2) the energy used (3)
4 answers
asked by
Olorunnimbe
727 views
An oil tank is 3m long, 3 m wide and 2 m high, when it is full of coconut oil specific gravity of 0.90, find the downward force
5 answers
asked by
mmmm
2,258 views
a force F is applied in horizontal to a 10kg block. the block moves at a constant speed 2m/s across a horizontal surface. the
6 answers
asked by
kristen
4,643 views
A small block with a mass of m = 0.120 kg is attached to a cord passing through a hole in a frictionless, horizontal surface.
5 answers
asked by
Sonya
3,859 views
A 0.5kg cart connected to light spring for which the force constant is 20 Nm on horizontal frictionless air track. Calculate the
5 answers
asked by
Anonymous
7,588 views
A hydraulic lift office chair has its seat attached to a piston with an area of
11.2 cm2 . The chair is raised by exerting force
7 answers
asked by
Alexis
7,525 views
A coconut of mass 2kg is on a tree of 5m tall; determine the potential energy of this height Take g=10ms^-2.
7 answers
asked by
Elvis
2,389 views
A machine has a velocity ratio of 6 and is 80% efficiency.What effort would be needed to lift a load of 300 with the help of
6 answers
asked by
Bright
4,918 views
maria's bicycle has a diameter of 64 cm. as she rides at the speed of 21.6 km/h, she picks up a stone in her tire. draw a graph
6 answers
asked by
Allison
2,786 views
A mass is oscillating with amplitude A at the end of a spring.
How far (in terms of A) is this mass from the equilibrium position
5 answers
asked by
Joe
4,977 views
A radar gun was used to record the speed of a car (in feet per minute) during selected times in the first 2 minutes of a race.
5 answers
asked by
Deondre
4,122 views
A ball is thrown towards a vertical wall from a point 2m above the ground and 3m from the wall. the initial velocity of the ball
8 answers
asked by
ridhi
3,146 views
A 0.230-kg wooden rod is 1.55 m long and pivots at one end. It is held horizontally and then released.
1) What is the angular
4 answers
asked by
anonymous
3,933 views
The length of simple pendulum that makes 12 oscillation/minute is
5 answers
asked by
Rajkumar
2,230 views
The handle of a car jack is moved 75 cm
and the car is lifted 2.5 cm. What is the ideal mechanical advantage of this car jack?
5 answers
asked by
Brittany
1,867 views
The velocity function (in meters per second) is given for a particle moving along a line.
v(t) = 3t − 7, 0 ≤ t ≤ 3 (a) Find
4 answers
asked by
Anonymous
13,108 views
The velocity of a particle on the x-axis is given by the differential equation dx/
dt= t^2/ 2 and the particle is at x = 4 when t
6 answers
asked by
John
1,835 views
An object weighs 15N in air and 13N when submerged in water. What is the density of the object.
5 answers
asked by
Striker
6,452 views
A 0.20-kg mass is hung from a vertical spring of force constant 55 N/m. When the
spring is released from its unstretched
5 answers
asked by
Syed
4,434 views
A Frisbee is thrown horizontally with a speed of 12 m/s. If the Frisbee moves a horizontal distance of 15 m, how long will it
5 answers
asked by
Jhoy
4,187 views
The angular speed of a larger pulley wheel (radius=15cm) is 50 rev./min. Find the angular speed of the smaller wheel
4 answers
asked by
Mary
1,465 views
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