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What Effort Will Be Required to Lift a Load of 500 N by a Single Movable Pulley? Hint: Mechanical Advantage of a Single Movable Pulley is Two
a stone is dropped from the top of a 45m high building how fast will it be moving When it reaches the ground and what will its velocity be?
A Styrofoam cylinder, filled with water, sits on a table. You then poke a small hole
through the side of the cylinder, 20 cm below the top of the water surface. What is
the speed of the fluid emerging from the hole?
The period of a simple pendulum depends on (a) the length (b) mass of the bob (c) the acceleration led to gravity .Find the actual length
The total mass of the car, fuel, and driver at the start of the race was 840 kg.
54% of the weight is distributed over the driving wheels of the car.
The coefficient of friction between the tyres used and the track on this day was 1.70.
(a) Calculate the maximum accelerating force possible at the tyres, at the start, before the wheels spin.
(b)Calculate the maximum possible acceleration off the line.
The force of a hatchdoor of a submarine of area 400cm2 is 45kcak. Calculate the depth of the door below the sea level of the atmospheric pressure is 4atm
A snooker ball X of mass 200g moving at 20ms-1 to hit another stationary ball T of mass 400g. If after the collision Y moves off at 60o to the initial direction of X while X moves off at 15o to it's initial direction with a velocity of 12ms-1,. Calculate the final velocity of T
A body of mass 600g moves round a track of area 154cm2 in 4secs. Calculate the total time taken to make expend 0.25KJ of energy
A load of mass 150kg is to be pulled up a smooth plane at 15 degrees to the vertical. Calculate the minimum force required to pull it up the plane if the plane is 75%efficient
An oil drop of mass 10-12 gm is floating on the free surface of a liquid. At any instant the position of the drop can be determined within the error of 10-4 cm. what will be the error in measurement of its velocity.
