A particle is subjected to a force $F = (3x^2 - 2x + 1)\hat{i}$ N, where $x$ is in meters. What is the work done by this force in moving the particle from $x = 0$ to $x = 2$ m?

A book rests on a table. The reaction force to the weight of the book is:

Sand is being dropped on a conveyor belt at the rate of M kg/s . The force necessary to keep the belt moving with a constant velocity of V m/s will be [newton]

Which of the following is a non-contact force?

A student attempts to pull himself up by tugging on his hair. He will not succeed

A body of mass 0.05 kg is observed to fall with an acceleration of 9.5 $m{s^{ - 2}}$. The opposing force of

air on the body is $\left( {9.8\,\,m{s^{ - 2}}} \right)$

A constant force (F) is applied on a stationary particle of mass $'m'$ . The velocity attained by the particle in a certain displacement will be proportional to

A block of mass 2 kg is placed on a rough horizontal surface. A horizontal force of 10 N is applied to the block. If the coefficient of static friction between the block and the surface is 0.6, what is the frictional force acting on the block?

A particle of mass 0.3 kg is subjected to a force $F = - kx\,with\,K = 15\,\,N/m$ . What will be

its initial acceleration if it is releases from a point 20 cm away from the origin

A book rests on a table. Which force balances the weight of the book?

A particle moves along a path defined by the equation $r = 2t^2\hat{i} + (3t - 1)\hat{j}$, where $r$ is in meters and $t$ is in seconds. At $t = 2$ seconds, a force $F = (4t\hat{i} + 6\hat{j})$ Newtons acts on the particle. What is the instantaneous power delivered by the force at $t = 2$ seconds?