Part 1
If W1 ,W2 and W3 represent the work done in moving a particle from A to B along three different paths 1,2 and 3 respectively (as shown) in a gravitational field of point mass m, then find the correct relation between W1,W2 and W3 .
21
Oct
If W1 ,W2 and W3 represent the work done in moving a particle from A to B along three different paths 1,2 and 3 respectively (as shown) in a gravitational field of point mass m, then find the correct relation between W1,W2 and W3 . 2 and 3 respectively (as shown) in a gravitational [...]
The two blocks in an Atwood machine have masses 2.0 kg and 3.0 kg. The work done by gravity during the fourth second after the system is released from rest.
21
Oct
The two blocks in an Atwood machine have masses 2.0 kg and 3.0 kg. The work done by gravity during the fourth second after the system is released from rest. The two blocks in an Atwood machine have masses 2.0 kg and 3.0 kg. The work done by gravity during the fourth second after the [...]
A block of mass 10kg is placed on a rough surface inclined plane of inclination 37^∘ with horizontal. Now the block is released . The work done by the gravitational force and friction force, when the block moves from A to B(sin37^∘ = 0.6, cos37^∘ = 0.8)
21
Oct
A block of mass 10kg is placed on a rough surface inclined plane of inclination 37^∘ with horizontal. Now the block is released . The work done by the gravitational force and friction force, when the block moves from A to B(sin37^∘ = 0.6, cos37^∘ = 0.8) A block of mass 10kg is placed on [...]
A man displaces a block by 5 m on a rough surface (μ=(1)/(2)) by applying a force 50 N acting at 37^∘ to the horizontal the work done by the applied force is
21
Oct
A man displaces a block by 5 m on a rough surface (μ=(1)/(2)) by applying a force 50 N acting at 37^∘ to the horizontal the work done by the applied force is A man displaces a block by 5 m on a rough surface (μ=(1)/(2)) by applying a force 50 N acting at 37^∘ [...]
A force F=−K(yiˆ+xjˆ) (where K is a positive constant) acts on a particle moving in the x-y plane. Starting from the origin, the particle is taken along the positive x-axis to the point (a,0), and then parallel to the y-axis to the point (a,a). The total work done by the force F on the particle is
21
Oct
A force F=−K(yiˆ+xjˆ) (where K is a positive constant) acts on a particle moving in the x-y plane. Starting from the origin, the particle is taken along the positive x-axis to the point (a,0), and then parallel to the y-axis to the point (a,a). The total work done by the force F on the particle [...]
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0 ) ,
A force F=−K(yiˆ+xjˆ) (where K is a positive constant) acts on a particle moving in the x-y plane. Starting from the origin ,
a). The total work done by the force F on the particle is ,
and then parallel to the y-axis to the point (a ,
the particle is taken along the positive x axis to the point (a ,
A particle moves from position 3i^+2j^−6k^ to 14i^+13j^+9k^ due to uniform force F (4i^+j^+3k^)N. If the displacement is in centimeters, then work done will be
20
Oct
A particle moves from position 3i^+2j^−6k^ to 14i^+13j^+9k^ due to uniform force F (4i^+j^+3k^)N. If the displacement is in centimeters, then work done will be A particle moves from position 3i^+2j^−6k^ to 14i^+13j^+9k^ due to uniform force F (4i^+j^+3k^)N. If the displacement is in centimeters then work done will be October 20, 2020 Category: Cengage [...]
A man takes 3h to cover a certain distance along the flow and takes 6h to cover the same distance opposite to flow. In how much time, he will cross this distance in still water.
20
Oct
A man takes 3h to cover a certain distance along the flow and takes 6h to cover the same distance opposite to flow. In how much time, he will cross this distance in still water. A man takes 3h to cover a certain distance along the flow and takes 6h to cover the same distance [...]
A cart is moving horizontally along a straight line with constant speed 30ms^−1. A particle is to be fired vertically upwards from the moving cart in such a way that it returns to the cart at the same point from where it was projected after the cart has moved 80m. At what speed (relative to the cart) must the projectile be fired? (Take g=10ms^−2)
20
Oct
A cart is moving horizontally along a straight line with constant speed 30ms^−1. A particle is to be fired vertically upwards from the moving cart in such a way that it returns to the cart at the same point from where it was projected after the cart has moved 80m. At what speed (relative to [...]
Six particles situated at the corners of a regular hexagon of side a move at a constant speed v. Each particle maintains a direction towards the particle at the next corner. The time the particles will take to meet each other.
20
Oct
Six particles situated at the corners of a regular hexagon of side a move at a constant speed v. Each particle maintains a direction towards the particle at the next corner. The time the particles will take to meet each other. B B along BC C along CD and D along DA. At which time [...]
Figure shows four paths for a kicked football. Ignoring the effects of air on the flight, rank the paths according to the initial horizontal velocity component, highest first.
20
Oct
Figure shows four paths for a kicked football. Ignoring the effects of air on the flight, rank the paths according to the initial horizontal velocity component, highest first. Figure shows four paths for a kicked football. Ignoring the effects of air on the flight highest first. rank the paths according to the initial horizontal velocity [...]