Chapter 6 – Newton’s Laws of Motion (With Friction) and Dynamics of Circular Motion
Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 6 - Newton's Laws of Motion (With Friction) and Dynamics of Circular Motion
Three identical particles are joined together by a thread as shown in figure All the particles are moving in a horizontal plane If the vertical of the outermost particle is `v_(0)` then the ratio of tension in the three sections of the string `(T_(1):T_(2):T_(3) = ?)` is
20
Oct
Three identical particles are joined together by a thread as shown in figure All the particles are moving in a horizontal plane If the vertical of the outermost particle is `v_(0)` then the ratio of tension in the three sections of the string `(T_(1):T_(2):T_(3) = ?)` is as shown .If F1 is removed F2=2N Figure [...]
When the string of a conical pendulum makes an angle of 45^∘ with the vertical , its time is T1 when the string makes an angle of 60^∘ with the vertical , its time period is T2 then T^21/T^22is
20
Oct
When the string of a conical pendulum makes an angle of 45^∘ with the vertical , its time is T1 when the string makes an angle of 60^∘ with the vertical , its time period is T2 then T^21/T^22is its time is T1 when the string makes an angle of 60^∘ with the vertical its [...]
A small ring P is threaded on a smooth wire bent in the form of a circle of radius a and center O. The wire is rotating with constant angular speed ω about a vertical diameter XY while the ring remains at rest relative to the wire at a distance a/2 from XY. Then ω^2 is equal to
20
Oct
A small ring P is threaded on a smooth wire bent in the form of a circle of radius a and center O. The wire is rotating with constant angular speed ω about a vertical diameter XY while the ring remains at rest relative to the wire at a distance a/2 from XY. Then ω^2 [...]
Figure shown a wooden block at rest in equilibrium on a rough horizontal plane being acted upon by force F1=10N,F2=2N, as shown .If F1 is removed , the resulting force acting on the block will be
20
Oct
Figure shown a wooden block at rest in equilibrium on a rough horizontal plane being acted upon by force F1=10N,F2=2N, as shown .If F1 is removed , the resulting force acting on the block will be as shown .If F1 is removed F2=2N Figure shown a wooden block at rest in equilibrium on a rough [...]
A block mass m is kept on an inclined plane of a lift moving down with acceleration of 2 ms^−2 . What should be minimum coefficient of friction to let the block move down with constant velocity?
20
Oct
A block mass m is kept on an inclined plane of a lift moving down with acceleration of 2 ms^−2 . What should be minimum coefficient of friction to let the block move down with constant velocity? A block mass m is kept on an inclined plane of a lift moving down with acceleration of [...]
A lift is moving upwards with a uniform velocity v in which a block of mass m is lying. The frictional force offered by the block, when coefficient of friction is μ = 0.5 will be :-
20
Oct
A lift is moving upwards with a uniform velocity v in which a block of mass m is lying. The frictional force offered by the block, when coefficient of friction is μ = 0.5 will be :- A lift is moving upwards with a uniform velocity v in which a block of mass m is [...]
In the pulley arrangement shown in Fig the pulley p2 is movable .Assuming the coefficient of friction between m and surface to be μ the minimum value of M for which m is at rest is
20
Oct
In the pulley arrangement shown in Fig the pulley p2 is movable .Assuming the coefficient of friction between m and surface to be μ the minimum value of M for which m is at rest is In the pulley arrangement shown in Fig the pulley p2 is movable .Assuming the coefficient of friction between m [...]
Two blocks (m and M) are arranged as in figure. There is friction between ground and M only and other surfaces are frictionless. The coefficient of friction between ground and M is u = 0.25. The maximum ratio of m and M (m/M) so that the system remains is at rest –
20
Oct
Two blocks (m and M) are arranged as in figure. There is friction between ground and M only and other surfaces are frictionless. The coefficient of friction between ground and M is u = 0.25. The maximum ratio of m and M (m/M) so that the system remains is at rest – A block of [...]
A triangular prism of mass M with a block of mass m placed on it is released from rest on a smooth inclined plane of inclination θ. The block does not slip on the prism. Then:
20
Oct
A triangular prism of mass M with a block of mass m placed on it is released from rest on a smooth inclined plane of inclination θ. The block does not slip on the prism. Then: A triangular prism of mass M with a block of mass m placed on it is released from rest [...]
In the Fig, the block of mass m is at rest relative to the wedge of mass M and the wedge is at rest with respect to ground. This implies that
20
Oct
In the Fig, the block of mass m is at rest relative to the wedge of mass M and the wedge is at rest with respect to ground. This implies that In the fig the block of mass m is at rest relative to the wedge of mass M and the wedge is at rest [...]