# physics

posted by .

I will be greateful to you,if you kindly hep me to solve the below problem:

When a horizontal force of 200N is applied on a body ,he acceleration produced in it is 1.5m/s2.when the force is 300N the acceleration produced in it is 2.5m/s2.find the mass of the body.

i have solved the above problem like this:

F=ma
(200+300)N=m*(1.5+2.5)m/s2
500N=m*(4)m/s2
500N=4m/s2*m
4m/s2*m=500
m=500/4
m=125kg

therefore mass of the body is 125kg.

## Similar Questions

1. ### Physics/Math

A 2.8 kg body is at rest on a frictionless horizontal air track when a horizontal force F acting in the positive direction of an x axis along the track is applied to the body. The force F is applied to the body at t = 0, and the graph …
2. ### physics

when a horizontal force of 300N is applied to 75kg crate, it slides on a level floor opposed by a force of friction equal to 95N. what is the acceleration of the crate?
3. ### Physics

Three blocks on a frictionless horizontal surface are in contact with each other A force F is applied to block 1 (m1) Draw a free body diagram for each block ok for the diagram is the force F applied horizontal to mass one does this …
4. ### Physics

A 2.9 kg body is at rest on a frictionless horizontal air track when a horizontal force F acting in the positive direction of an x axis along the track is applied to the body. A stroboscopic graph of the position of the body as it …
5. ### physics

A force of 8.7 N is applied to a steel block initally at rest on a horizontal frictionless surface. The force, which is directed at an angle of 30.0o below the horizontal, gives the block a horizontal acceleration of 5.3 m/s2. a) Draw …
6. ### Physics

A box weighting 200N is pushed on a horizontal floor. What acceleration will result if a horizontal force of 100N is applied to the box.?
7. ### physics

Two bodies have masses in ratio 3:4when a force is applied on the first body it moves with an acceleration of 6m/s2 how much acceleration will the same force produced in the body
8. ### plz help me

1)When a 10-kg crate is pushed across a frictionless horizontal floor with a force of 14 N, directed 25° below the horizontal, the magnitude of the normal force of the floor on the crate is (g = 10 m/s2): 2)A constant force of 2.8 …
9. ### tokarara

Calculate work done if a force of 300N is applied at 30° to the horizontal and the body moves 20m
10. ### Physics

I don't know how to solve this problem. In it, I am given the mass (4 kg), acceleration (0), velocity (20 m/s), coefficient of friction (.2), and the applied force (10 N downwards with an angle of 30 degrees above the horizontal). …

More Similar Questions