Answer:
Bank angle = 35.34o
Explanation:
Since the road is frictionless,
Tan (bank angle) = V^2/r*g
Where V = speed of the racing car in m/s, r = radius of the arc in metres and g = acceleration due to gravity in m/s^2
Tan ( bank angle) = 40^2/(230*9.81)
Tan (bank angle) = 0.7091
Bank angle = tan inverse (0.7091)
Bank angle = 35.34o
A body accelerates due to net force acting on it. As newton's second law of motion states:
when a net force acts on a body, it produces acceleration in the body in the direction of the net force
Answer:
R=19.5m
= 4.65° S of W
Explanation:
Refer the attached fig.
displacement of the x and y components
x-component displacement is (
) = 
= A 
(20°) + B 
(40°)
= -12.0(20°) + 20.0(40°)
= -19.425m
x-component displacement is (
) = 
= A (20°) - B (40°)
= 12.0(20°) - 20.0(40°)
= -1.579
resultant displacement
∴
R = 
=
=19.5m
= 
= 
= 4.65° S of W
