A box of mass m is pulled with a constant acceleration a along a horizontal frictionless floor by a wire that makes an angle of 15 degrees above the horizontal.The tension in this wire is greater than ma.

Question

Quizplus · Accepted Answer

The tension in the wire is given by T = (m*a)/cosθ, where θ is the angle the wire makes with the horizontal. As θ is greater than 0 degrees, cosθ is less than 1. Therefore, T is greater than ma.

A Box of Mass M Is Pulled with a Constant