Question Answers
Sahay Sir > Question Answers
A political party has to start its procession in an area where wind is blowing at a speed of 30 square root 2 kmh −1 and party flags on the cars are fluttering along north-east direction. If the procession starts with a speed of 40kmh −1 towards north, find the direction of flags on the cars.
28
Aug
A political party has to start its procession in an area where wind is blowing at a speed of 30 square root 2 kmh −1 and party flags on the cars are fluttering along north-east direction. If the procession starts with a speed of 40kmh −1 towards north, find the direction of flags on the [...]
A block of mass M is attached to the lower end of a vertical spring. The spring is hung from a ceiling and has force constant value k. The mass is released from rest with the spring initially unstretched. The maximum extension produced in the length of the spring will be :
28
Aug
A block of mass M is attached to the lower end of a vertical spring. The spring is hung from a ceiling and has force constant value k. The mass is released from rest with the spring initially unstretched. The maximum extension produced in the length of the spring will be : A Force F=20+10 [...]
Force F on a particle moving in a straight line varies with distance d as shown in figure. The work done on the particle during its displacement of 12m is:
28
Aug
Force F on a particle moving in a straight line varies with distance d as shown in figure. The work done on the particle during its displacement of 12m is: Force F on a particle moving in a straight line varies with distance d as shown in figure. The work done on the particle during [...]
A Force F = 20 + 10 y acts on a particle in y direction, where F is in newton and y in meter. Work done by this force to move the particle from y = 0 to y = 1 m is
28
Aug
A Force F = 20 + 10 y acts on a particle in y direction, where F is in newton and y in meter. Work done by this force to move the particle from y = 0 to y = 1 m is A Force F=20+10 y acts on a particle in y direction where [...]
A block slips along an incline of a wedge. Due to the reaction of the block on the wedge, it slips backwards. An observer on the wedge will se the block moving straight down the incline. Discuss how to find the absolute velocity of the block.
28
Aug
A block slips along an incline of a wedge. Due to the reaction of the block on the wedge, it slips backwards. An observer on the wedge will se the block moving straight down the incline. Discuss how to find the absolute velocity of the block. A block slips along an incline of a wedge. [...]
300 J of work is done in sliding a 2 kg block up an inclined plane of height 10 m. The work done against friction is (Take g = 10m/s^2)
28
Aug
300 J of work is done in sliding a 2 kg block up an inclined plane of height 10 m. The work done against friction is (Take g = 10m/s^2) 300 J of work is done in sliding a 2 kg block up an inclined plane of height 10 m. The work done against friction [...]
A body of mass 1 kg of thrown upwards with a velocity 20 m/s. It momentarily comes to rest after attaining a height of 18m. How much energy is lost due to air friction ? (g=10m/s^2)
28
Aug
A body of mass 1 kg of thrown upwards with a velocity 20 m/s. It momentarily comes to rest after attaining a height of 18m. How much energy is lost due to air friction ? (g=10m/s^2) A body of mass 1 kg of thrown upwards with a velocity 20 m/s. It momentarily comes to rest [...]
A uniform force of (3i^+j^) newton acts on a particle of mass 2 kg. Hence the particle is displaced from position (2i^+k^) meter to position (4i^+3j^−k^) meter. The work done by the force on the particle is
28
Aug
A uniform force of (3i^+j^) newton acts on a particle of mass 2 kg. Hence the particle is displaced from position (2i^+k^) meter to position (4i^+3j^−k^) meter. The work done by the force on the particle is A particle moves from a point (-2i^ + 5j^) to (4j^ + 3k^ ) when a force of [...]
Two objects A and B are moving along the directions as shown in Figure. Find the magnitude and direction of the relative velocity of B w.r.t. A.
28
Aug
Two objects A and B are moving along the directions as shown in Figure. Find the magnitude and direction of the relative velocity of B w.r.t. A. Two objects A and B are moving along the directions as shown in Figure. Find the magnitude and direction of the relative velocity of B w.r.t. A. August [...]
Two similar spring P and Q have spring constants KP and KQ, such that KP KQ. They are stretched, first by the same amount (case a), then by the same force (case b). The work done by the spring WP and WQ are related as, in case (a) and case (b), respectively:
28
Aug
Two similar spring P and Q have spring constants KP and KQ, such that KP KQ. They are stretched, first by the same amount (case a), then by the same force (case b). The work done by the spring WP and WQ are related as, in case (a) and case (b), respectively: first by [...]