If a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of friction 0.3
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A particle of mass m is projected with a velocity v making an angle of 45^∘ with the horizontal. The magnitude of the angular momentum of the projectile abut the point of projection when the particle is at its maximum height h is.
23
Oct
A particle of mass m is projected with a velocity v making an angle of 45^∘ with the horizontal. The magnitude of the angular momentum of the projectile abut the point of projection when the particle is at its maximum height h is. If a ladder weighing 250 N is placed against a smooth vertical [...]
Two point masses of 0.3 kg and 0.7 kg are fixed at the ends of a rod of length 1.4 m and of negligible mass. The rod is set rotating about an axis perpendicular to its length with a uniform angular speed. The point on the rod through which the axis should pass in order that the work required for rotation of the rod is minimum, is located at a distance of
23
Oct
Two point masses of 0.3 kg and 0.7 kg are fixed at the ends of a rod of length 1.4 m and of negligible mass. The rod is set rotating about an axis perpendicular to its length with a uniform angular speed. The point on the rod through which the axis should pass in order [...]
A cord is wound round the circumference of wheel of radius r. The axis of the wheel is horizontal and fixed and moment of inertia about it is I. A weight mg is attached to the end of the cord and falls from rest. After falling through a distance h, the angular velocity of the wheel will be.
23
Oct
A cord is wound round the circumference of wheel of radius r. The axis of the wheel is horizontal and fixed and moment of inertia about it is I. A weight mg is attached to the end of the cord and falls from rest. After falling through a distance h, the angular velocity of the [...]
A uniform rod of length L is placed with one end in contact with the horizontal and is then inclined at an angle α to the horizontal and allowed to fall without slipping at contact point. When it becomes horizontal, its angular velocity will be
23
Oct
A uniform rod of length L is placed with one end in contact with the horizontal and is then inclined at an angle α to the horizontal and allowed to fall without slipping at contact point. When it becomes horizontal, its angular velocity will be If a ladder weighing 250 N is placed against a [...]
A block of base 10cm×10cm and height 15cm is kept on an inclined plane. The coefficient of friction between them is 3–√. The inclination θ of this inclined plane from the horizontal plane is gradually increased from 0∘. Then
23
Oct
A block of base 10cm×10cm and height 15cm is kept on an inclined plane. The coefficient of friction between them is 3–√. The inclination θ of this inclined plane from the horizontal plane is gradually increased from 0∘. Then If a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of [...]
A rectangular block has a square base measuring a × a and its height is h. It moves on a horizontal surface in a direction perpendicular to one of the edges. The coefficient of friction is μ. It will topple if
23
Oct
A rectangular block has a square base measuring a × a and its height is h. It moves on a horizontal surface in a direction perpendicular to one of the edges. The coefficient of friction is μ. It will topple if If a ladder weighing 250 N is placed against a smooth vertical wall having [...]
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 [...]