1.) How can a simple fixed pulley make a job easier? (1 point)
O by decreasing the force required to lift the object
O by decreasing the work done
• by changing the direction at which the force needs to be applied
O by decreasing the distance that the force needs to be applied
3.) A pulley system has a mechanical advantage of 3, and an object weighing 9 Newtons must be lifted 15 meters. How much force must be applied to
lift the object?
Use the following equation to find the answer:
MA= F/F
(1 point)
O 3N
O 27 N
O 0.3 N
O 1.7 N
27 N
Huh?
9N / 3 = 3 N
1.) A simple fixed pulley can make a job easier by changing the direction at which the force needs to be applied.
1.) A simple fixed pulley can make a job easier by changing the direction at which the force needs to be applied. When using a pulley, the force is applied downwards instead of upwards, reducing the effort required to lift an object.
3.) To solve this problem, we can use the equation for mechanical advantage (MA) to find the force (F) required to lift the object. The equation is:
MA = F / F
Given that the mechanical advantage is 3, and the object weighs 9 Newtons and must be lifted 15 meters, we can set up the equation as:
3 = F / (9 N)
To solve for F, we need to rearrange the equation:
F = 3 * 9 N
F = 27 Newtons
Therefore, the force required to lift the object is 27 Newtons.