MASS Mechanical Concepts

Question 1

The force required to move 550 pounds one foot in one second is usually referred to as:

Accepted Answer

Horsepower

Answer

Volts

Answer

Joule

Answer

Meters

Question 2

Mark must pull a truck for 1 minute. The truck weighs 115.5 tons. What is the bare minimum in terms of horsepower?

Accepted Answer

7hp

Answer

10hp

Answer

14hp

Answer

23hp

Question 3

5,968 watts are needed by an elevator motor to drive the elevator. How many horsepower does the elevator's electric motor have?

Accepted Answer

8

Answer

16

Answer

9

Answer

20

Question 4

A pipe connects two identical covered liquid containers. How much force will the connecting pipe apply if one side receives 12 lbs of force?

Accepted Answer

12 lbs

Answer

16 lbs

Answer

18 lbs

Answer

20 lbs

Question 5

An engine produces 90hp and is 90% efficient. So, how much horsepower is being lost due to inefficiency?

Accepted Answer

10hp

Answer

20hp

Answer

.20hp

Answer

.10hp

Question 6

Daryl is using a pulley system to lift a 100-pound box, but the pulleys are only 50% efficient. How many pounds of force is he using to move the box?

Accepted Answer

200lbs

Answer

100lbs

Answer

300lbs

Answer

400lbs

Question 7

How much work did a rock climber put in if he used 660 newtons to climb a 30 meter cliff?

Accepted Answer

19,800J

Answer

15,600J

Answer

20,000J

Answer

10,400J