Engineering High School

Use 9.81 m/s² for acceleration due to gravity.
An electric winch lifts a 20 kg crate 2.5 meters. If the winch must not exceed 100 watts during use, what is the fastest time that could be used to lift the crate?

A) 5 seconds
B) 3 seconds
C) 6 seconds
D) 4 seconds

Answers

Answer 1

The fastest time that could be used to lift the crate is A) 5 seconds.

What is the fastest time to lift the crate?

To solve this problem, we wil use the equation for work which is "work = force x distance"

The force required to lift the crate is equal to its weight, so, force = mass x acceleration due to gravity

= 20 kg x 9.81 m/s²

= 196.2 N

Using the given power of 100 watts, we can solve for the time required:

Power = work/time

Time = work/power

Time = force x distance / power

Time = (20 kg x 9.81 m/s² x 2.5 m) / 100 W

Time = 4.905 s

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Related Questions

determine if the material fails at point C according to
Mohr’s failure criterion

Answers

Based on the information, the material fails at point C according to Mohr’s failure criterion.

What is Mohr’s failure?

Mohr's failure criterion is an intricate mathematical model employed to interdict the time when a material yields and fails underneath various loading conditions.

Deriving from the essence of stress and strain - quantifying the internal forces, deformation in a matter - the ideology is introduced of binding points in two-dimensional stress space, comprising of horizontal and vertical planes reflecting the normal stresses as well as shear stresses, respectively.

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For the rock crusher shown here, theta equals 60theta equals 60 degrees. Given an input force F_in = 12 N, what is the force F_crush in N (rounded to the nearest 1 place of decimal) generated at the output link at a point e= 2.5 m from the ground? Assume 100% mechanical efficiency.

Answers

The force F_crush in N (rounded to the nearest 1 place of decimal) generated at the output link at a point e= 2.5 m from the ground assume 100% mechanical efficiency is 6.9282N

What is force?

In physics, force is a push or pull that changes the motion of an object. It is typically measured in units of newtons (N).

In this case, the force F_crush in N (rounded to the nearest 1 place of decimal) generated at the output link at a point e= 2.5 m from the ground assume 100% mechanical efficiency is:

= 12 / ✓3

= 6.9282N

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A paper airplane flies through the air 26 meters towards the west during a 20 second period. What is the average velocity of the paper airplane?

1.3 m/s westward
1.3 m/s
0.77 m/s westward
0.77 m/s

Answers

Answer:

The answer is 0.77 m/s westward.

Average velocity is defined as the total displacement divided by the total time. In this case, the total displacement is 26 meters westward and the total time is 20 seconds. Therefore, the average velocity is 0.77 m/s westward.

Explanation:

Answer:

The answer is 0.77 m/s westward.

Explanation:

Average velocity is defined as the total displacement divided by the total time. In this case, the total displacement is 26 meters westward and the total time is 20 seconds. Therefore, the average velocity is 0.77 m/s westward.

Please help me solve this! I will award brainest to who does it first.

Answers

Answer:

A

Explanation:

cause it satisfy 3 of the statment + if L1 or L2 is burn out the flow of current will not terminate

The answer to ur question is what the above answer said which is A

When making a new product, why might designers and engineers go through the
design process more than once?
A. Designers and engineers repeat
the design process to make sure
that all tests will go exactly
according to plan.
C. Designers and engineers repeat
the design process to address
different parts of their design, or
improve their design further.
B. Designers and engineers only go
through the design process once
when designing a product.
D. Both A and B

Answers

Answer:C. Designers and engineers repeat

the design process to address

different parts of their design, or

improve their design further.

Explanation:just took it

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