What is the maximum velocity at which a 60-watt motor can lift an 8.5-kg mass upward?

Physics

1 answer:

enyata [817]2 years ago

3 0

Pick <em>choice-A</em> .

Weight of a mass = (mass) x (gravity)

Earth gravity = (9.8 m/s )

Weight of a mass = (9.8 x mass) Newtons

Work = (force) x (distance)

Power = (work done) / (time to do the work)

Weight of this mass = (8.5 kg) x ( 9.8 m/s ) = 83.3 Newtons

Work to lift it 1 meter = (83.3 N) x (1 m) = 83.3 Joules

Power to lift it 1 meter/sec = 83.3 Joule/sec = 83.3 watt

Power to lift it ' v ' meters/sec = 83.3v watts

In this problem ...

83.3 v watts = 60 watts

v = 60/83.3 m/s

You might be interested in

Which is a true statement about a series circuit?

vaieri [72.5K]

the answer is B your welcome

6 0

3 years ago

Why do the snakes only get one unit of energy?

mojhsa [17]

Answer: Snakes are reptiles

Explanation: All reptiles are ectothermic (they obtain body heat from their environment).

7 0

3 years ago

lesantik [10]

Number two because the sun emits heat in the form of light to earth

5 0

2 years ago

Read 2 more answers

Which sequence correctly reflects the order in which electrical charges occur during an action potential, from first to last?

Lady_Fox [76]

This sequence refer to how neurons send messages electrochemically. When the neurons are at rest, they are at its resting potential at -70 millivolts. If the neurons in the brain send messages, a spike would occur until it reaches the threshold potential at -55 mV. If it reaches the threshold potential, then an action potential occurs.Hence, the sequence would be letter C.

4 0

3 years ago

A 2 kg object traveling at 5 m s on a frictionless horizontal surface collides head-on with and sticks to a 3 kg object initiall

Svetlanka [38]

Answer: (d)

Explanation:

Given

Mass of object $m=2\ kg$