When three forces of 50 ,N, 30, N and 15,N act on a body, then body is

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4-1.Newton's Laws of Motion

easy

When three forces of $50 \,N, 30\, N $ and $15\,N$ act on a body, then the body is

AAt rest

BMoving with a uniform velocity

CIn equilibrium

DMoving with an acceleration

Solution

(d)Here all the three force will not keep the particle in equilibrium so the net force will not be zero and the particle will move with an acceleration.

Standard 11

Physics

A soldier with a machine gun, falling from an alrplane gets detached from his parachute. He is able to resist the downward acceleration, if he shoots $40$ bullets a second at the speed of $500 \,m / s$. If the weight of a bullet is $49 \,g$, the weight of the man ………. $ \,kg$ with the gun? Ignore resistance due to air and assume the acceleration due to gravity, $g=9.8 \,ms ^{-2}$.

hard

(KVPY-2010)

A body, under the action of a force $\vec F = 6\hat i – 8\hat j + 10\hat k$, acquires an acceleration of $1\, m/s^2$ The mass of this body must be

easy

(AIPMT-1996)

The momentum $p$ (in $kg m / s )$ of a particle is varying with time $t$ (in $s )$ as $p=2+3 t^2$. The force acting on the particle at $t=3 s$ will be ……… $N$

easy

A machine gun fires $20$ bullets per second into a target. Each bullet weighs $150 $ gms and has a speed of $800 \,m/sec$. Find the force necessary to hold the gun in position ………… $N$

easy

The momentum $p$ of an object varies with time $(t)$ as shown in figure. The corresponding force $(F)$-time $(t)$ graph is

medium

When three forces of $50 \,N, 30\, N $ and $15\,N$ act on a body, then the body is

Solution

Similar Questions

A body, under the action of a force $\vec F = 6\hat i – 8\hat j + 10\hat k$, acquires an acceleration of $1\, m/s^2$ The mass of this body must be

The momentum $p$ (in $kg m / s )$ of a particle is varying with time $t$ (in $s )$ as $p=2+3 t^2$. The force acting on the particle at $t=3 s$ will be ……… $N$

A machine gun fires $20$ bullets per second into a target. Each bullet weighs $150 $ gms and has a speed of $800 \,m/sec$. Find the force necessary to hold the gun in position ………… $N$

The momentum $p$ of an object varies with time $(t)$ as shown in figure. The corresponding force $(F)$-time $(t)$ graph is

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