Part 1
Three forces F1,F2 and F3 together keep a body is equilibrium. If F1=3N along the positive X-axis F2=4N along the positive Y-axis, then the third force F2 is:
12
Sep
Three forces F1,F2 and F3 together keep a body is equilibrium. If F1=3N along the positive X-axis F2=4N along the positive Y-axis, then the third force F2 is: F2 and F3 together keep a body is equilibrium. If F1=3N along the positive X-axis F2=4N along the positive Y-axis then the third force F2 is: Three [...]
A block of mass 15 kg is held by a string on an inclined plane (angle 30∘). The tension T in string is (g=10m/s)
12
Sep
A block of mass 15 kg is held by a string on an inclined plane (angle 30∘). The tension T in string is (g=10m/s) A block of mass 15 kg is held by a string on an inclined plane (angle 30∘). The tension T in string is (g=10m/s) September 12, 2020 Category: Chapter 5 - [...]
Two particles of mass m1 and m2 in projectile motion have velocities v1 < v2 respectively at tine t=0. They collide at time t0. Their velocities become v1′ and v2′ at time 2 t0′ while still moving in air. The value of ∣∣∣∣(m1v1′+ m2v2′) − (m1v1 + m2v2)∣∣∣∣ is
12
Sep
Two particles of mass m1 and m2 in projectile motion have velocities v1 < v2 respectively at tine t=0. They collide at time t0. Their velocities become v1′ and v2′ at time 2 t0′ while still moving in air. The value of ∣∣∣∣(m1v1′+ m2v2′) − (m1v1 + m2v2)∣∣∣∣ is A 5 kg shell kept at [...]
A man of 50 kg is standing at one end on a boat of length 25 m and mass 200 kg.If he starts running and when he reaches the other end , he has a velocity 2ms^−1 with respect to the boat.The final velocity of the boat is (in ms^−1).
12
Sep
A man of 50 kg is standing at one end on a boat of length 25 m and mass 200 kg.If he starts running and when he reaches the other end , he has a velocity 2ms^−1 with respect to the boat.The final velocity of the boat is (in ms^−1). A man of 50 kg [...]
A 5 kg shell kept at rest suddenly splits up into three parts. If two parts of mass 2 kg each are found flying due north and east with velocity 5 m/s each, what is the velocity of third part after explosion ?
11
Sep
A 5 kg shell kept at rest suddenly splits up into three parts. If two parts of mass 2 kg each are found flying due north and east with velocity 5 m/s each, what is the velocity of third part after explosion ? A 5 kg shell kept at rest suddenly splits up into three [...]
Two ice skaters A and B approach each other at right angles. Skater A has a mass 30kg and velocity 1m/s skater B has a mass 20kg and velocity 2m/s. They meet and cling together. Their final velocity of the couple is:
11
Sep
Two ice skaters A and B approach each other at right angles. Skater A has a mass 30kg and velocity 1m/s skater B has a mass 20kg and velocity 2m/s. They meet and cling together. Their final velocity of the couple is: The position-time graph of a body of mass 2 kg is as shown [...]
A 100 kg gun fires a ball of 1 kg horizontally from a cliff of height 500m. It falls on the ground at a distance of 400 m from the bottom of the cliff. the recoil velocity of the gun is ( Take g = 10ms^−2)
11
Sep
A 100 kg gun fires a ball of 1 kg horizontally from a cliff of height 500m. It falls on the ground at a distance of 400 m from the bottom of the cliff. the recoil velocity of the gun is ( Take g = 10ms^−2) The tension in the string in the pulley system [...]
The position-time graph of a body of mass 2 kg is as shown in figure. What is the impulse on the body at t=4 s ?
11
Sep
The position-time graph of a body of mass 2 kg is as shown in figure. What is the impulse on the body at t=4 s ? The position-time graph of a body of mass 2 kg is as shown in figure. What is the impulse on the body at t=4 s ? September 11, 2020 [...]
A girl riding a bicycle along a straight road with a speed of 5 m s^–1 throws a stone of mass 0.5 kg which has a speed of 15 m s^–1 with respect to the ground along her direction of motion. The mass of the girl and bicycle is 50 kg. What is the change in speed of the bicycle ?
11
Sep
A girl riding a bicycle along a straight road with a speed of 5 m s^–1 throws a stone of mass 0.5 kg which has a speed of 15 m s^–1 with respect to the ground along her direction of motion. The mass of the girl and bicycle is 50 kg. What is the change [...]
Two billiard balls A and B, each of mass 50 kg and moving in opposite direction with speed of 5ms^−1 each, collide and rebound with the same speed. If the collision lasts for 10^−3s, which of the following statements are true?
11
Sep
Two billiard balls A and B, each of mass 50 kg and moving in opposite direction with speed of 5ms^−1 each, collide and rebound with the same speed. If the collision lasts for 10^−3s, which of the following statements are true? collide and rebound with the same speed. If the collision lasts for 10^−3s each [...]