A 15-Kg Child Is Sitting on a Playground Teeter-Totter,1

question 5

Multiple Choice

A 15-kg child is sitting on a playground teeter-totter,1.5 m from the pivot.What is the magnitude of the minimum force,applied 0.30 m on the other side of the pivot,that is needed to make the child lift off the ground?

• A)75 N
• B)740 N
• C)23 N
• D)44 N
• E)66 N

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Definitions:

Skip-Shifting

The practice of shifting gears non-sequentially, typically skipping one or more gears, to better match engine output to driving conditions.

Incorrect Gear

A gear selection that does not match the optimal or desired operational requirements, leading to inefficiency or mechanical stress.

Diaphragm Spring

Diaphragm spring is a type of spring used in clutch and brake applications, characterized by its conical shape, which allows it to exert a clamping force while enabling control over engagement and disengagement.