You are correct with both of your equations, however this question just looks at how the mass responds to a known force (we call this inertial mass).

We just use F_{net}=ma

47 = m (4.2)

Therefore m=47/42 = 1.12 kg

Bri S.

asked • 10/13/21A block of unknown mass is at rest on a smooth, hotizontal surface. A horizontal force of 47 N causes the block to accelerate at 4.2 m/s^{2}. What is the weight of the block?

I know there are two general equations: F=ma and W=mg. I have tried to combine these but get stuck. I know I can't use the W=mg equation and plug in the numbers, so what do I do?

More

You are correct with both of your equations, however this question just looks at how the mass responds to a known force (we call this inertial mass).

We just use F_{net}=ma

47 = m (4.2)

Therefore m=47/42 = 1.12 kg

Bri S.

This video did help! Thank you
Report

10/15/21

Ask a question for free

Get a free answer to a quick problem.

Most questions answered within 4 hours.

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.

Bri S.

Thannk you!10/15/21