A500n person stands 2.5m from a wall against which a horizontal beam is attached. the beam is 6m long and weighs 200n. a cable is attached to the free end of the beam and makes an angle of 45 to the horizontal and is attached to the wall.
1)determine the magnitude of the tension of the cable.
2)determine the reaction force that the wall exerts on the beam.

PART A)

Here by force balance along Y direction

Force balance along X direction

now by torque balance

PART B)

now from above equations

now net reaction force of wall is given as

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s