Question

A body of mass 5 kg is pushed with a force of 75 Newton if coefficient between the body and the floor is 0.5
Then find
1.the magnitude of frictional force
2. The acceleration of the body is
3. If there is no friction between the surface and body,the acceleration of the body is

Answer 1

Explanation:

m= 5 kg

F= 75 N

mew= 0.5

frictional force acts opposite in direction of the applied force and is given by

1) f= mew ×m×g

= 0.5×5×10= 25 N

2) since the applied force is greater the body will move

F - f = ma

75 - 25 = 5×a

a = 50/5 = 10 m/ s^2

3) If there is no friction

then acceleration is given by

F = ma

75= 5× a

a = 15 m/ s^2