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Questions (14)
A drop hammer of mass 120 kg falls 2.5 m onto a pile of mass 250 kg and drives it 70 mm into the ground. Calculate:
a.The
0 answers
804 views
A motorised gearbox has a reduction ratio of 50:1. The power input to the gearbox is 5 kW at 1440 RPM. The gearbox efficiency is
0 answers
743 views
A drop hammer of mass 120 kg falls 2.5 m onto a pile of mass 250 kg and drives it 70 mm into the ground. Calculate:
a.The
0 answers
816 views
A motorised gearbox has a reduction ratio of 50:1. The power input to the gearbox is 5 kW at 1440 RPM. The gearbox efficiency is
1 answer
1,002 views
An airplane is flying in a horizontal circle at a speed of 117 m/s. The pilot does not
want his centrifugal acceleration to
1 answer
1,174 views
Tarzan (m = 78.4 kg) tries to cross a river by swinging from a vine. The vine is 10 m
long. Tarzan doesn't know that the vine has
1 answer
1,387 views
A person is flying a model airplane with mass 82.2 gram in a horizontal circular path on the
end of a string 10.5 m long. The
1 answer
1,287 views
An object is launched from the ground into the air at an angle of 38.0 o (above the horizon) towards a vertical brick wall that
2 answers
2,016 views
A 950-kg car is initially travelling at 60 km/hr. If the speed increases so that its kinetic energy increases by 165 kJ,
1 answer
698 views
A wheel has turned through 120 revs in 10 s after starting. find the angular acceleration.
1 answer
769 views
The throttle of an electric train is shut off at a speed of 48 km/h. The total mass of the train is 81
tonne and the combined
0 answers
518 views
If, after rotating for some time at constant angular velocity of 72 rad/s, brakes are applied to the flywheel
producing
2 answers
727 views
A 1 tonne caravan is being towed by a car which provides a constant drawbar pull of 40 N. If the
resistance to motion is 20 N,
2 answers
792 views
The five engines of the first stage of a launch vehicle provide a total thrust of
31.5 x 106 newtons to the space vehicle (launch
1 answer
1,183 views
Answers (1)
could you please who me full working out
