Can someone please solve these physics1 for engineers problems w/solution and an

Question

Can someone please solve these physics1 for engineers problems w/solution and answers? I really need the solution to study problems and learn how to solve step-by-step.

fritionm04 Bali 2 (with mass okag) hangs cnect pulley,Calculate the me f tation of ball2 Q2. In the figure, block 1 (with mass 5 kg) slides on a surface with a coefficient of kinetic friction m 0.4. Ball 2 (with mass 10kg) hangs by a string that is connected to block 1 over a pulley. Calculate the magnitude of the acceleration of ball 2 Q3. When you walk, you use energy at a rate of about 300W. How much total energy do you need to walk 3km in one hour

Explanation / Answer

for block

T - f = m1*a

F = frictional force = u*m1*g

T = m1a + f = m1a + um1g

for ball2

m2*g -T = m2*a

m2*g - m1*a - u*m1*g = m2*a

a = (m2*g - u*m1*g)/(m1+m2)

a = ((10*9.8)-(0.4*5*9.8))/(10+5)

a = 5.2 m/s^2
++++++++++++++++++

Q3

W = P*t = 300*60*60 = 1080000 J

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