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- A man lifts a weight of 300N through a vertical height of 2m, in 6 seconds. Determine the power developed.
A man lifts a weight of 300N through a vertical height of 2m, in 6 seconds. Determine the power developed.
Form 3, Physics: Work, Energy, Power and Machines
Date posted: March 5, 2019.
- An electric crane lifts a load of 2000kg through a vertical distance of 3.0m in 6 seconds
Determine:
An electric crane lifts a load of 2000kg through a vertical distance of 3.0m in 6 seconds
Determine:
i)The work done
ii) The power developed by the crane.
iii).The efficiency of the crane if it is operated by an electric motor rated 12.5kw.
Form 3, Physics: Work, Energy, Power and Machines
Date posted: March 5, 2019.
- A rugby player of mass 75kg, running east at 8.0 m/s, tackles another player of mass 90kg and who is running directly towards him at 5.0m/s. If the two players cling together, determine their common velocity.
A rugby player of mass 75kg, running east at 8.0 m/s, tackles another player of mass 90kg and who is running directly towards him at 5.0m/s. If the two players cling together, determine their common velocity.
Form 3, Physics: Linear Motion
Date posted: February 27, 2019.
- A bus of mass 2500kg initially moving at 20m/s is brought to rest over a distance of 20m. Determine the force required to achieve this.
A bus of mass 2500kg initially moving at 20m/s is brought to rest over a distance of 20m. Determine the force required to achieve this.
Form 3, Physics: Linear Motion
Date posted: February 27, 2019.
- A certain design of jaguar sports car is capable of accelerating from rest to a velocity of 30ms-1 in only 6s. Find the acceleration of the car, hence the distance traveled in the 6s.
A certain design of jaguar sports car is capable of accelerating from rest to a velocity of 30ms-1 in only 6s. Find the acceleration of the car, hence the distance traveled in the 6s.
Form 3, Physics: Linear Motion
Date posted: February 27, 2019.
- An electric crane lifts a load of 2000 kg through a vertical distance of 3.0 m in 6s. Determine:
i)work done.
ii)power developed
iii)efficiency of the crane if it is operated by an electric motor rated 12.5 kw.
An electric crane lifts a load of 2000 kg through a vertical distance of 3.0 m in 6s. Determine:
i)work done.
ii)power developed
iii)efficiency of the crane if it is operated by an electric motor rated 12.5 kw.
Form 3, Physics: Work, Energy, Power and Machines
Date posted: February 27, 2019.