# Physics

posted by .

When a man in a cage whose weight is 1000N pulls a rope that is attached on a cage around a fixed pulley,the force he exerts on the floor of the cage is 450N ,if the cage weigh 250N ,find the acceleration

• Physics -

I don't get the picture...a man in a cage pulls a rope attached to the cage..

• Physics -

Picture it like this:the rope is attached on top of the cage then from there it passes around a fixed pulley so the man in the cage is pulling the rope down from the pulley.PLEASE HELP ME Bobpursley

• Physics -

The weight of cage + man is 1250 N and their combined mass is
Mtotal = Wtotal/g = 127.6 kg.

The man and cage accelerate at the same rate, a. Let F be the rope tension force. Consider all forces on the man, including weight and the upward floor force. The man's mass is 102 kg
F - Wman + 450 = F - 550 = 102*a
Now consider all exernal forces on man and cage together:
F -1250 = 127.6 a
Combining the two results in
700 = -25.6 a
a = -0.0366 m/s^2

• Physics -

I think u have to also take

T-f-Wchair=McA

• Physics -

U did a mistake
Wtotal/g=127.55

## Similar Questions

1. ### math

The old lion cage at the zoo was a square, with sides x meters long. For the part of the zoo's 50 birthday celecration, the zoo expanded the length and width. The expression for the total area of the new cage is (x^2+18x+81) square …

A daredevil is riding a motorcycle on the inside of a spherical metal cage of radius 9.7 meters. The total mass of the person and motorcycle is 79.2 kg. If he is to make a vertical circle within the cage at some constant speed, v, …
3. ### Math

need some help on an algebra question. First we had to put the different combinations of 6 rabbits in 2 cages. Like 2 rabbits in the red cage and 4 rabbits in the blue cage...etc. Then it says to write an equation using variables that …
4. ### Algebra 1

1. Simplify 49^3/2. My answer: 343? 2. Simplify 5^ãx^25y^125. My answer: x^5y^25?
5. ### Algebra 1 Answer Check

1. Simplify 49^3/2. My answer: 343? 2. Simplify 5^ãx^25y^125. My answer: x^5y^25?
6. ### Algebra 1

Genie has 100 feet of fence with which to make a rectangular cage for her rabbit. If she uses the wall of her house as one side, the area of the cage in square feet is given by the polynomial -2w^2 + 100w, where w is the width of the …
7. ### physics

A cage descends a mine shaft with an acceleration of 0.5 m/s2. After the cage has travelled 25 metres, a stone is dropped from the top of the shaft. Determine : 1. the time taken by the stone to hit the cage, and 2. distance travelled …
8. ### theory of machines

A winding drum raises a cage through a height of 120 m. the cage has, at first, an accelerationof 1.5 m/s^2 until the velocity of 9 m/s is reached, after which the velocity is constant until the cage nears the top, when the final retardation …
9. ### Physics

A large centrifuge is used to expose aspiring astronauts to accelerations similar to those experienced in rocket launches and atmospheric reentries. a) At what angular velocity is the centripetal acceleration 10 gs if the rider is …
10. ### Theory of machine

A winding drum raises a cage through a height of 120 m. the cage has, at first, an accelerationof 1.5 m/s^2 until the velocity of 9 m/s is reached, after which the velocity is constant until the cage nears the top, when the final retardation …

More Similar Questions