physics

posted by .

An engine provides a 10kw of power to lift a heavy load at a constant velocity a distance 20m in 5s. what is the mass of the object being lifted?

• physics -

10kw=m*9.8*20m/5s

solve for mass

• physics -

150kg?

• physics -

• physics -

when i worked it out one way i got 250kg and when i worked it out the second way i got 200kg

• physics -

so what is the right answer?

Similar Questions

1. Physics

(a).A 220-kg sleigh is pulled by one horse at constant velocity for 0.90 km on a snowy, horizontal surface, the coefficient of kinetic friction between the sleigh runners and snow is 0.27. What power must the horse deliver to the sleigh …
2. physics

a man has only 4 simple pulleys to lift a heavy load of 6000N. in roder to lift the load easily, he combines the pulleys (3 moveable, 1 fixed). given that the frictional forces are 300N, what force must he apply in order to lift the …
3. physics

A person uses a lever to lift a load. The person pushes downward with a force of 17 N a vertical distance of 1.8 m. Under ideal condidtions (no friction, bending, etc.), how high up can a load weighing 610 N be lifted?
4. physics

Suppose we wish to use a 4.0 m iron bar to lift a heavy object by using it as a lever. If we place the pivot point at a distance of 0.5 m from the end of the bar that is in contact with the load and we can exert a downward force of …
5. physics

Find the force (in newton) required to lift a mass of 26 kg load with a wheelbarrow (2nd class lever) with the load at 0.75 m from the fulcrum and being lifted at 1.7 m from the fulcrum, assuming ideal conditions.
6. Physics

A crane lifts a 200kg load at a steady velocity.It takes 12s to raise the load through 60m. i) What is the power needed to lift the load if there is no friction?
7. Physics

A large engine with mass of 400 kg must be lifted 3 meters out of a truck for repair. A normal mechanic can lift with about 250 N of pulling force. They use a system of pulleys to do this. If we assume the engine starts on the ground, …
8. maths

the load which a crame can lift up is directly proportional to the mass and inversely proportional to the height through which the load is to be lifted.if a load of 40+ and mass of 175gm is lifted through height from what load will …
9. maths(variation)

pls when solving finish it up!!! Very urgent! 1) the load which a crame can lift up is directly proportional to the mass and inversely proportional to the height through which the load is to be lifted.if a load of 40 and mass of 175gm …
10. Physics

A load of mass 80kg is placed in a lift. Calculate the reaction between the floor of the lift and the load when the lift moves upwards: (i) at constant velocity, (ii) with an acceleration 2ms 2 [Take g 9.8ms 2].

More Similar Questions