$W_in = 100\text J$, $W_out = 100\text J$. Efficiency $= 100%$.
Section 14.3 focuses on how machines transform input force into output force and the energy losses that occur during this process. Below are the key concepts and answers typical of study guides and worksheets for this section. Key Concepts & Definitions Mechanical Advantage (MA) : The number of times a machine increases an input force. Actual Mechanical Advantage (AMA) $W_in = 100\text J$, $W_out = 100\text J$
If you push with 10 N and the machine pushes with 50 N, MA = 50/10 = 5. Below are the key concepts and answers typical
$IMA = \fracd_ind_out = \frac0.5\text m2.0\text m = \mathbf0.25$ $IMA = \fracd_ind_out = \frac0
Method 1: Using Forces and Distances
Priya pointed to the crate of stage weights. "The Drama Club needs to lift a backdrop that weighs 600 Newtons. If we trust the book’s answer key that the Mechanical Advantage is 4, then you’d only need to pull with 150 Newtons of force, right?"