Pulling force making an angle theta to the h | vedclass

Name: PDF Generator App | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(c) $\uparrow: N+F \sin 	heta=W \Rightarrow N=W-F \sin 	heta$

The block will move if

$F \cos 	heta \geq f_{\max }$

$F \cos 	heta \geq \mu

Vedclass · Accepted Answer

$\frac{{W\sin \alpha }}{{\cos (	heta - \alpha )}}$

Vedclass · Answer

(c) $\uparrow: N+F \sin 	heta=W \Rightarrow N=W-F \sin 	heta$

The block will move if

$F \cos 	heta \geq f_{\max }$

$F \cos 	heta \geq \mu(W-F \sin 	heta)$

$\mu=	an \alpha=\frac{\sin \alpha}{\cos \alpha}$

$F \cos 	heta \geq \frac{\sin \alpha}{\cos \alpha}(W-F \sin 	heta)$

$F(\cos 	heta \cos \alpha+\sin 	heta \sin \alpha) \geq W \sin \alpha$

$F \geq \frac{W \sin \alpha}{\cos (	heta-\alpha)}$

$F_{\min }=\frac{W \sin \alpha}{\cos (	heta-\alpha)}$

Pulling force making an angle $\theta $ to the horizontal is applied on a block of weight $W$ placed on a horizontal table. If the angle of friction is $\alpha $, then the magnitude of force required to move the body is equal to

Similar Questions

A uniform chain of length $L$ changes partly from a table which is kept in equilibrium by friction. The maximum length that can withstand without slipping is $l$, then coefficient of friction between the table and the chain is

Aball of mass $m$ is thrown vertically upwards.Assume the force of air resistance has magnitude proportional to the velocity, and direction opposite to the velocity's. At the highest point, the ball's acceleration is

A body of weight $50 \,N$ placed on a horizontal surface is just moved by a force of $28.2\, N$. The frictional force and the normal reaction are

A box of mass $m\, kg$ is placed on the rear side of an open truck accelerating at $4\, m/s^2$. The coefficient of friction between the box and the surface below it is $0.4$. The net acceleration of the box with respect to the truck is zero. The value of $m$ is :- $[g = 10\,m/s^2]$

What is the maximum value of the force $F$ such that the block shown in the arrangement, does not move ........ $N$