Part 1
If a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of friction 0.3, then what is the maximum force of friction available at the point of contact between the ladder and the floor?
23
Oct
If a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of friction 0.3, then what is the maximum force of friction available at the point of contact between the ladder and the floor? If a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of friction [...]
A uniform horizontal meter scale of mass m is suspended by two vertical strings attached to its two ends. A block of mass 3m is placed on the 60cm mark. The tensions in the two strings are in the ratio
23
Oct
A uniform horizontal meter scale of mass m is suspended by two vertical strings attached to its two ends. A block of mass 3m is placed on the 60cm mark. The tensions in the two strings are in the ratio The angle turned by a body undergoing circular motion depends on time as θ=θ0+θ1t+θ2r^2. Then [...]
Two men p and q are carrying a uniform rod of length l on their shoulders the rod is held horizontally such that p get one-third load. If P is at one end of the rod the distance of Q from that end is
23
Oct
Two men p and q are carrying a uniform rod of length l on their shoulders the rod is held horizontally such that p get one-third load. If P is at one end of the rod the distance of Q from that end is Two men p and q are carrying a uniform rod of [...]
A circular disc A of radius r is made from an iron plate of thickness t and another circular disc B of radius 4r is made from an iron plate of thickness t/4. Equal torques act on the discs A and B, initially both being at rest. At a later instant, the linear speeds of a point on the rim of A and another point on the rim of B are vA and vB, respectively. We have
23
Oct
A circular disc A of radius r is made from an iron plate of thickness t and another circular disc B of radius 4r is made from an iron plate of thickness t/4. Equal torques act on the discs A and B, initially both being at rest. At a later instant, the linear speeds of [...]
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A circular disc A of radius r is made from an iron plate of thickness t and another circular disc B of radius 4r is made from an iron plate of thickness t/4. Equal torques act on the discs A and B ,
initially both being at rest. At a later instant ,
respectively. We have ,
the linear speeds of a point on the rim of A and another point on the rim of B are vA and vB ,
In the figure (i) half of the meter scale is made of wood while the other half, of steel. The wooden part is pivoted at O. A force F is applied at the end of steel part. In figure (ii) the steel part is pivoted at O and the same force is applied at the wooden end
23
Oct
In the figure (i) half of the meter scale is made of wood while the other half, of steel. The wooden part is pivoted at O. A force F is applied at the end of steel part. In figure (ii) the steel part is pivoted at O and the same force is applied at the [...]
Two men support a uniform horizontal beam at its two ends, if one of them suddenly lets go, the force exerted by the beam on the other man will
23
Oct
Two men support a uniform horizontal beam at its two ends, if one of them suddenly lets go, the force exerted by the beam on the other man will if one of them suddenly lets go the force exerted by the beam on the other man will Two men support a uniform horizontal beam at [...]
A uniform rod of length l and mass m is free to rotate in a vertical plane about A as shown in Fig. The rod initially in horizontal position is released. The initial angular acceleration of the rod will be
23
Oct
A uniform rod of length l and mass m is free to rotate in a vertical plane about A as shown in Fig. The rod initially in horizontal position is released. The initial angular acceleration of the rod will be The angle turned by a body undergoing circular motion depends on time as θ=θ0+θ1t+θ2r^2. Then [...]
A constant torque of 31.4N−m id exerted on a pivoted wheel. If the angular acceleration of the wheel is 4πrad/s^2, then the moment of inertia of the wheel is
23
Oct
A constant torque of 31.4N−m id exerted on a pivoted wheel. If the angular acceleration of the wheel is 4πrad/s^2, then the moment of inertia of the wheel is A constant torque of 31.4N−m id exerted on a pivoted wheel. If the angular acceleration of the wheel is 4πrad/s^2 then the moment of inertia of [...]
The instantaneous angular position of a point on a rotating wheel is given by the equation θ(t)=2t^3−6t^2. The torque on the wheel becomes zero at
23
Oct
The instantaneous angular position of a point on a rotating wheel is given by the equation θ(t)=2t^3−6t^2. The torque on the wheel becomes zero at The instantaneous angular position of a point on a rotating wheel is given by the equation θ(t)=2t^3−6t^2. The torque on the wheel becomes zero at October 23, 2020 Category: Cengage [...]
Find the torque of a force F = -3i+j+5k acting at the point r = 7 i+3j+k
23
Oct
Find the torque of a force F = -3i+j+5k acting at the point r = 7 i+3j+k Find the torque of a force F = -3i+j+5k acting at the point r = 7 i+3j+k October 23, 2020 Category: Cengage NEET by C.P Singh , Chapter 11 - Rotational Motion , Part 1 ,