exam 4 past problems and solutions - lafayette …...(50 points) if a force of p=100n is applied to...

Lafayette College ES226 Celebration of Knowledge Four Past Exam Problems and Solutions

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NAME: ____________________________________________

EXAM 4 – PAST PROBLEMS AND SOLUTIONS You are allowed to use a calculator and drawing equipment, only.

60 minute time limit

1. (55 Points). Determine the force in member GC of the truss and state whether this member is in tension or compression.


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(40 points) The toggle clamp is subjected to a force of 40 lbs at the handle. Determine the clamping force acting at E.

5”

5”

5”

15”

15”

40 lbs


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2. (30 Points). Determine the forces in members FH, GH, and GI. Given: support A is a pin and support L is a roller. Indicate

the final answers in the space provided.


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1. (50 points) If a force of P=100N is applied to the handle of the toggle clamp, determine the horizontal clamping force NE that the clamp exerts on the smooth wooden block at E.


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1. (50 points) The arch shown has a pinned support at A, a roller support at C and a pinned connection at B. A tension rod connects A and C, as shown. Determine the reaction components at A and C and the tension in rod AC.


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1. (40 points) Using the directions indicated, determine the magnitude of reaction components Ax, Ay, Bx, and By. Given: Beam AC is subjected to a load distribution that increases linearly from 0 to 1000 lb/ft, as shown. Supports A and B are pins. The connection at point C is a pin. BC is a cable. Ignore the thickness of the beam.

1000 lb/ft

A

B

C

5 ft

30ºAx

Ay

Bx

By


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1. (15 points) Identify all of the zero-force members in the truss shown by clearly marking the zero-force member with a “0”. Given: concentrated forces P and Q, as shown. Pinned support at A, roller support at O.

2. (35 points) Determine the magnitude of force in members DE, AE, and AC for the truss shown and clearly indicate whether

the force is in tension or compression, for each Given: 200 kN force at D and 100 kN force at C, as shown. Pinned support at F, roller support at G.

3. (50 points) Determine the force P.

Given: Pruning shears exert at force of 300-lb on the smooth round twig.

P

P


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1. (15 points) Identify all of the zero-force members in the truss shown by clearly marking the zero-force member with a “0”. Given: concentrated forces P and Q, as shown. Pinned support at A, roller support at O.

2. (35 points) Determine the magnitude of force in members DE, AE, and AC for the truss shown and clearly indicate whether

the force is in tension or compression, for each Given: 200 kN force at D and 100 kN force at C, as shown. Pinned support at F, roller support at G.


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3. (50 points) Determine the force P. Given: Pruning shears exert at force of 300-lb on the smooth round twig.

exam 4 past problems and solutions - lafayette …...(50 points) if a force of p=100n is applied to...

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