A man M1 of mass 80kg runs up a staircase in 15s. Another man M2 also of mass 80kg runs up the same staircase in 20s. The ratio of the power development by then will be:
Sahay Sir > Question Answers > A man M1 of mass 80kg runs up a staircase in 15s. Another man M2 also of mass 80kg runs up the same staircase in 20s. The ratio of the power development by then will be:
The velocity-time graph of a particle moving in a straight line is shown in figure. The mass of the particle is 2kg. Work done by all the forces acting on the particle in time interval between t=0 to t=10s is
20
Oct
The velocity-time graph of a particle moving in a straight line is shown in figure. The mass of the particle is 2kg. Work done by all the forces acting on the particle in time interval between t=0 to t=10s is A man M1 of mass 80kg runs up a staircase in 15s. Another man M2 [...]
A heavy weight is suspended from a spring . A person raises the weight till the spring becomes slack . The done by him is W. The energy stored in the stretched spring was E . What will be the gain in gravitational potential energy?
20
Oct
A heavy weight is suspended from a spring . A person raises the weight till the spring becomes slack . The done by him is W. The energy stored in the stretched spring was E . What will be the gain in gravitational potential energy? A man M1 of mass 80kg runs up a staircase [...]
A bus can be stopped by applying a retarding force F when it is moving with speed v on a level road. The distance covered by it before coming to rest is s. If the load of the bus increase by 50% because of passengers, for the same speed and same retarding force, the distance covered by the bus to come to rest shall be
20
Oct
A bus can be stopped by applying a retarding force F when it is moving with speed v on a level road. The distance covered by it before coming to rest is s. If the load of the bus increase by 50% because of passengers, for the same speed and same retarding force, the distance [...]
An engine pumps water continuously through a hole. Speed with which water passes through the hole nozzle is v and k is the mass per unit length of the water jet as it leaves the nozzle. Find the rate at which kinetic energy is being imparted to the water.
20
Oct
An engine pumps water continuously through a hole. Speed with which water passes through the hole nozzle is v and k is the mass per unit length of the water jet as it leaves the nozzle. Find the rate at which kinetic energy is being imparted to the water. A man M1 of mass 80kg [...]
A pump motor is used to deliver water at a certain rate from a given pipe. To obtain ‘n’ times water from the same pipe in the same time by what amount (a) the force and (b) power of the motor should be increased ?
20
Oct
A pump motor is used to deliver water at a certain rate from a given pipe. To obtain ‘n’ times water from the same pipe in the same time by what amount (a) the force and (b) power of the motor should be increased ? A man M1 of mass 80kg runs up a staircase [...]
A man M1 of mass 80kg runs up a staircase in 15s. Another man M2 also of mass 80kg runs up the same staircase in 20s. The ratio of the power development by then will be:
20
Oct
A man M1 of mass 80kg runs up a staircase in 15s. Another man M2 also of mass 80kg runs up the same staircase in 20s. The ratio of the power development by then will be: A man M1 of mass 80kg runs up a staircase in 15s. Another man M2 also of mass 80kg [...]