Consider the following excavator and its loading condition. Folloing on form the Pre-Workshop video of this machine, determine the resultant force in the pin at point O. Provide your answer in kN to 4 decimal places. [2 marks]

A pair of 100-N forces are applied to the handles of the pliers as shown in the figure below. Determine the mechanical advantage of this plier. Provide your answer to 4 decimal places.

Determine the force F required to keep the lever stationary as shown in the figure below. The mass of the object is 30 kg. Assume the gravitational acceleration to be 9.8 m/s². Provide your answer in N to 4 decimal places.

Which of the following statements describes a second-class lever?

Which of the following best describes mechanical advantage?

Select all structures that contain a multiforce member.

Which of the following statements is true regarding forces common to any two contacting members?

Which of the following statements is true?

Calculate the maximum deflection of the following beam in millimetres (mm). Assume the beam is made of steel with E = 200 000 MPa

Please write your answer to 2 decimal places, do not include units in your answer and consider a downwards deflection to be positive.

The formula for the deflection at the mid-span of a simply supported beam is δ = 5wL⁴/384EI where a positive deflection here indicates a downwards deflection. 

Calculate the maximum deflection of the following beam in millimetres (mm). Assume the beam is made of steel with E = 200 000 MPa

Please write your answer to 2 decimal places, do not include units in your answer and consider a downwards deflection to be positive.

The formula for the deflection at the tip of a cantilever beam δ = PL³/3EI where a positive deflection here indicates a downwards deflection.