Start Free Mock LoginAlready registered? Login here

Physics - NLM Question with Solution | TestHub

PhysicsNLMFrictionMedium2 minQB

PhysicsMediummultiple choice

The force $F_{1}$ that is necessary to move a body up an inclined plane is double the force $F_{2}$ that is necessary to just prevent it from sliding down, then (Where $ϕ =$ angle of friction, $θ =$ angle of inclined plane, $w =$ weight of the body )

Options:(select one or more)

Answer:

A, D

Solution:

$F_{1} = m g sin θ + μ m g cos θ$ . $F_{2} = m g sin θ - μ m g cos θ$ .

But $m g = w$ , $μ = tan ϕ$ . Therefore, $F_{1} = w (sin θ + \frac{s i n ϕ}{c o s ϕ} cos θ)$ .

Stream:JEESubject:PhysicsTopic:NLMSubtopic:Friction

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...