# 71 - Newton's laws of motion and friction Questions Answers

A force acts for 20 seconds on a body of mass 10 kg after which force ceases and the body describes 50m in the next 10 seconds . find the magnitude of the force?

pls solve question 8

Joshi sir comment
Joshi sir comment
Joshi sir comment

Concept of pseudo force

A small body of mass m=0.30kg$m=0.30kg$ starts sliding down from the top of a smooth sphere of radius R=1.00m$R=1.00m$. The sphere rotates with a constant angular velocity ω=6.0rad/s$\omega =6.0rad/s$ about a vertical axis passing through its centre. Find the centrifugal force of inertia and the Coriolis force at the moment when the body breaks off the surface of the sphere in the reference frame fixed to the sphere.