A boy wants to lift a 100 N rock using a stick lever and stone fulcrum. If the rock is 0.5 m from the fulcrum and the boy can exert 50 N of force, how far from the fulcrum must he push? Hint: Use the Law of Torques equation. Fe x le = Fr x lr

explanation:

could i give you a exaplo that could you?

d eras and periods

small = small current large mag large current

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s